<html>
<head>
    <title>Login Form</title>
    <form action="/admin/register_form" method="post">
        用户名：<input type="text" name="username">
        密码：<input type="password" name="password">
        确认密码: <input type="password" name="password2">
        <button type="submit">点击注册</button>
    </form>
</head>
</html>